Note that if the tree already had a root element, it will be overwritten, possibly causing a memory leak, as the old root element is not automatically freed. So, if you plan to set a new root element, remember to free the old one first.

Note that if the tree already had a root element, it will be overwritten, possibly causing a memory leak, as the old root element is not automatically freed. So, if you plan to set a new root element, remember to free the old one first.